Supplement to Specifications for Electrical …

1 Supplement toSpecifications for Electrical InstallationsGeneral requirements Above 600-Volt ServiceElectric System Bulletin No. 7511 June, 2014(Supersedes all previous versions of ESB 751)National Grid / Supplement to Specifications for Electrical Installations / ESB 751 June 2014 2 For the latest authorized version please refer to the Company s website at PREFACE This Supplement of the Specifications for Electrical Installations (ESB 750) supersedes previous ESB 751 documents from the Niagara Mohawk Power Corporation legacy company of National Grid. This Supplement covers additional Specifications for performance requirements of Company provisions and customer responsibilities where service delivery is greater than 600 Volts and is applicable for the following National Grid companies: Massachusetts Electric Company Nantucket Electric Company The Narragansett Electric Company Niagara Mohawk Power Corporation This Supplement is available from the Company s web site and may be obtained: From the Internet at , Or in printed form by contacting either of the Call Centers in Massachusetts or New York (see inside cover of ESB 750).

2 However, printed copies are not document controlled, so for the latest authorized version please refer to the Company s website. National Grid / Supplement to Specifications for Electrical Installations / ESB 751 June 2014 For the latest authorized version please refer to the Company s website at 1 TABLE OF CONTENTS 1 PURPOSE .. 1 SCOPE .. 1 CUSTOMER S RESPONSIBILITIES FOR TAKING SERVICE ABOVE 600 1 SERVICE PLAN .. 2 COMPANY ELECTRIC POWER SYSTEM MODIFICATIONS .. 2 CODES, STANDARDS, AND 2 2 ACRONYMS/SYNONYMS .. 3 GENERAL SERVICE CONNECTION requirements ABOVE 600 3 VOLTAGES AVAILABLE ABOVE 600 3 Table Available Services above 600 Volts (Upstate NY).. 3 Table Available Services above 600 Volts (MA, NH, and RI) .. 4 APPLYING FOR SERVICE GREATER THAN 600 4 DESIGN ACCEPTANCE 4 DESIGN ACCEPTANCE REVIEW PROCESS.

3 4 Design Review Summary .. 5 Submittal of Design Materials to the 5 6 DETAIL DESIGN SUBMITTAL PROCESS .. 7 STAGE A: PRELIMINARY DESIGN SUBMITTAL 7 STAGE B: DESIGN AND PROCUREMENT 8 STAGE C: CONSTRUCTION AND installation 11 COMPLIANCE AND VERIFICATION .. 11 STAGE D: COMPLIANCE AND VERIFICATION TESTING 11 CUSTOMER NOTIFICATION OF SATISFACTORY COMPLETION OF 11 Required Testing Documentation .. 11 Customer s Testing and Commissioning Plan 12 Relay Witness Testing .. 12 Company s Field Audit .. 12 Electrical Inspection by Code Enforcement Authority .. 12 Customer Operating Agreement and Company Operating Diagram .. 13 Company s Right to Operate .. 13 ENERGIZATION AND/OR SYNCHRONIZATION .. 13 STAGE E: ENERGIZATION AND SYNCHRONIZATION 13 13 AUTHORIZATIONS.

4 14 ENERGIZATION 14 Energization Coordinator .. 14 Energization Plan Development and 14 Synchronization ..14 PROJECT CLOSE OUT .. 15 STAGE F: PROJECT CLOSEOUT 15 PERIODIC 15 REVISION HISTORY .. 16 APPENDIX A .. 17 National Grid / Supplement to Specifications for Electrical Installations / ESB 751 June 2014 For the latest authorized version please refer to the Company s website at 1 INTRODUCTION PURPOSE This Supplement to Electrical System Bulletin (ESB) 750 provides the Company s and Customer s performance requirements for service interconnections greater than 600 Volts. It also provides general design and compliance verification review process requirements for a Customer or Generator-owner who is, or will be supplied by a National Grid (Company) designated voltage in excess of 600 Volts.

5 It is important that the Customer or Generator-owner and their engineer or contractor obtain and refer to the Specifications for Electrical Installations booklet (ESB 750, latest version) and other applicable ESB 750 series supplements in conjunction with these requirements . SCOPE Performance requirements for services above 600 Volts contained herein cover communications with the Company, planning and approval processes, required technical submittals and compliance verification for medium and high voltage customer installations. Prescriptive requirements for the Customer or Generator-owner shall comply with the appropriate Company Electric System Bulletin (ESB) which covers details for their service installation . These Bulletins include: ESB 750 - Specifications for Electrical Installations ESB 752 - Services Above 15,000 Volts ESB 753 - Primary Meter Pole ESB 755 - Operation & Maintenance requirements for Services Above 600 Volts ESB 756 - requirements for Parallel Generation Connected to a National Grid Owned EPS ESB 758 - Primary Service to Metal Enclosed Gear ESB 759B - Underground Commercial Distribution (UCD) installation & Responsibility Guide CUSTOMER S RESPONSIBILITIES FOR TAKING SERVICE ABOVE 600 VOLTS 1.

6 The Customer shall consult the Company in every case where the service voltage may exceed 600 Volts. The Company will designate the type of service based on the location, size and nature of the proposed load and its relation to the Company's facilities. 2. Refer to Sections and in ESB 750 for requirement of a Design Professional related to the design of the Customer s service connection above 600 Volts. In addition, only qualified persons are permitted to install, operate, maintain and/or work on these facilities. Prior to ordering equipment for new or changed services, the Customer must obtain acceptance of their design proposal from the Company. Refer to Section in ESB 755. National Grid / Supplement to Specifications for Electrical Installations / ESB 751 June 2014 2 For the latest authorized version please refer to the Company s website at SERVICE PLAN The Company will develop a written Service Plan documenting the method for serving a specific Customer.

7 The Service Plan documents the Company s method for serving a specific Customer. Electrical studies to support the Service Plan development may require Customer contributions based upon service complexity. Service Plans are generally developed for Customers interconnecting to the Company s Electric Power System (EPS) at voltages exceeding 15kV. The Service Plan includes, but is not limited to, the specified delivery voltage, required technical submittals for Company review, and verification requirements . COMPANY ELECTRIC POWER SYSTEM MODIFICATIONS Company modifications, other than the line extension and service lateral, may be required. These modifications may require funding from the Customer. It is the Customer s responsibility to obtain for the Company, and/or pay for such environmental and highway permits, rights-of-way and easements from other parties secured by the Company on behalf of the Customer s project.

8 All cost estimates are required to be paid in full, by the Customer, prior to the commencement of construction activities by the Company, and prior to the interconnection of the Customer s facility. TELECOMMUNICATION SERVICE Depending on the installation , the type and configuration of the service, and at the discretion of the Company, the Customer may need to provide telecommunications circuits and related equipment to ensure coordination with the Company s electric power system. The cost and coordination of such installations is the responsibility of the Customer. Maintenance of the telecommunications service lines is the responsibility of the telecommunications provider. The Company will specify the required types of telecommunications systems required for coordination with the Company s Electric Power System (EPS).

9 CODES, STANDARDS, AND REFERENCES See Section of the Company s ESB 750 and the other prescriptive ESB 750 Series listed in Section above for all applicable codes and standards that the Customer s installation shall adhere to. DEFINITIONS Note: The following are terms defined as used in this publication. Refer to ESB 750 Section and the other prescriptive ESB 750 Series for definitions. Customer A Customer will be synonymous with a Generator Owner for the purpose of this Supplement Design Professional A Professional Engineer, authorized and licensed to practice in the respective state or jurisdiction in which the project will be installed and operated Qualified Person As defined by the National Electrical Code, is one who has skills and knowledge related to the construction and operation of the Electrical equipment and installations and has received safety training to recognize and avoid the hazards involved National Grid / Supplement to Specifications for Electrical Installations / ESB 751 June 2014 For the latest authorized version please refer to the Company s website at 3 ACRONYMS/SYNONYMS ANSI American National Standards Institute Energization - In Service EPS - Electric Power System ESB - Electric System Bulletin IEEE Institute for Electrical and Electronic Engineering TOA Transmission Outage Authorization GENERAL SERVICE CONNECTION requirements ABOVE 600 VOLTS VOLTAGES AVAILABLE ABOVE 600 VOLTS All new services will be 60 Hertz, single phase or three phase.

10 Alternating current, designated by the Company. For service above 600 Volts, the Company will solely designate the type of service based on the location of the Customer and the size and character of the proposed load. The following types of service above 600 Volts in Tables and are generally standard but not all types are available at all locations. The Customer should consider the installation of their own voltage regulation equipment if necessary to maintain utilization voltage within the limits of the latest edition of ANSI Table Available Services above 600 Volts (Upstate NY) Company s Typical Voltage Delivery Levels Phases Wires Company s Nominal Delivery Voltage (Volts) Minimum Customer Load (kVA) Maximum Customer Load (kVA) Note 3 3 3 3 3 4 3 3 2,400 4,160 4,800 12,000 500 1000 1.